What is Chemistry Word Scramble
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Question | Answer |
Define Matter | (anything that has mass and takes up space) |
Define Chemistry | the study of the composition of matter and the changes it undergoes. |
What aspects of life does Chemistry affect? | all aspects of life and most natural events since all living and non living things are made up of matter. |
what is chemistry known as? | it is known as the central science because it is fundamental to the understanding of other sciences. |
Describe Organic chemistry | its defined by the study of all compounds containing carbon |
what is inorganic chemistry | the study of chemicals that generally don't contain carbon. |
where do you find a product of inorganic chemistry | found in non living organisms like under rocks. |
what is biochemistry | the area of chemistry that focuses on processes that take place in organisms |
what is an example of biochemistry | digestion and muscle contraction. |
what is analytical chemistry | it focusses on the composition of matter. |
what is an example of analytical chemistry | measuring the level of carbon dioxide in the atmosphere. |
describe physical chemistry | the area of chemistry that deals with the mechanism, the rate, and the energy transfer that occurs when matter undergoes change. |
pure chemistry | is the pursuit of chemical knowledge for its own sake. may not have immediate use for knowledge. |
applied chemistry | research directed toward a practical goal or application |
why does chemistry affect all aspects of life and most natural events? | because all living and non-living things are made up of matter. matter is anything that has mass and takes up space |
name the 5 traditional areas into which chemistry can be divided. | organic, physical, analytical, inorganic, biochemisry |
name the 3 general reasons to study chemistry? | 1. it explains the natural world 2. it prepares people for career opportunities 3. it produces informed citizens. |
how has modern research in chemistry impacted society? | modern research in chemistry can lead to technologies that aim to benefit the environment, conserve and produce energy, improve human life, and expand our knowledge of the universe. |
how can a knowledge of chemistry help us be a more informed citizen | the government provides funds for scientific research. through the knowledge of chemistry and then voting on it we are being an informed citizen. |
define Mass of an object | a measure of the amount of matter that an object contains. |
define gas | a form of matter that takes the shape and volume of its container; a gas has no definite shape or volume |
what is vapor | describes the gaseous state of a substance that is generally a liquid or solid at room temperature. |
what is physical change | a change during which some properties of a material change, but the composition of the material does not change. sand and water. |
what is a chemical property | the ability of a substance to undergo a specific chemical change |
what is a chemical change | a change that produces matter with a different composition than the original matter |
chemical reaction | a change in which one or more reactants change into one or more products; characterized by the breaking of bonds in reactants and the formation of bonds in products |
whats a reactant | a substance present at the start of the reaction |
what is a product | the substance that is produced in a chemical reaction |
name 4 possible clues to chemical change | transfer of energy a change in color the production of gas or the formation of a precipitate |
chemical changes don't involve the transfer of energy... true or false | false. all chemical changes include the transfer of energy |
what is a precipitate | a solid that forms and settles out of a liquid mixture. |
what happens during any chemical reaction | the mass of the products is always equal to the mass of the reactants. |
state the law of conservation of mass | any physical change or chemical reaction, mass is conserved. mass is neither created nor destroyed. |
describe a mixture | a physical blend of two or more components. |
based on the distribution of their components, what can mixtures be classified as | either heterogeneous or homogeneous mixtures. |
what is a homogeneous mixture | mixture in which the composition is uniform throughout. tomato soup |
what is a heterogeneous mixture | a mixture in which the content is not the same throughout. chicken soup |
what are solutions | many are liquids but some are gasses like air and some are silids like stainless steel. |
what is a phase | its used to describe any part of a sample with uniform composition and properties |
what would be a good way to separate mixtures | using the differences in physical properties.....alcohol and water.....you could boil the alcohol off or freeze the solution. |
the process that separates a solid from a liquid in a heterogeneous mixture is called.... | filtration |
what is a way to separate water from other components? | distillation |
describe distillation | a liquid is boiled to produce a vapor that is then condensed into a liquid. |
what is an element | the simplest for of matter that has a unique set of properties |
describe a compound | a substance that contains two or more elements chemically combined in a fixed proportion. |
state the difference between an element and a compound | compounds can be broken down into simpler substances chemically but elements cannot. |
how do you know a material is a substance or a mixture? | if its a substance then the composition of the material is fixed. if its a mixture the composition of a material may vary. |
how to chemists represent elements | using chemical symbols |
how do chemists represent compounds | using chemical formulas |
describe the periodic table | is an arrangement of elements in which the elements are separated into groups based on a set of repeating properties. |
what is a perk of have the periodic table | the table allows you to easily compare the properties of elements or a group of elements combined. |
what is each horizontal row of the periodic table | a period |
how many periods are there in the periodic table | 7 |
distinguish between extensive property and intensive property | both are types of physical properties of matters. intensive don't depend on the amount of matter present but extensive do. |
CC between a mixture and a pure substance | |
CC homogeneous and heterogeneous | A homogeneous mixture has the same uniform appearance and composition throughout. A heterogeneous mixture consists of visibly different substances or phases. |
is matter homogeneous or heterogeneous | matter is both homo and hetero |
what physical properties could be used to separate iron filings from table salt. | you could separate with a magnet or by adding water |
air is mainly a mixture of nitrogen and oxygen, with small amounts of other gases such as argon and carbon dioxide. what property would you use to separate the gases in air? | distillation |
what always happens during a chemical change? | the composition of matter always changes |
how are the mass of the reactants and the mass of the products of a chemical reaction related | during any chemical reaction the mass of the products is always equal to the mass of the reactants. |
physical property | a property that can be observed or measured without changing the substances composition. see, hear, feel, touch, smell, measure. |
3 characteristics of solid | has defined shape and volume, particles packed tightly together, incompressible. |
3 characteristics of liquid | takes shape of container but overall volume doesn't change, particles packed les tightly together, incompressible |
3 characteristics of gas | takes shape of container but will expand to increase to volume of container, particles packed loosely together, easily compressed. |
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